{"id":"CVE-2026-40970","aliases":["GHSA-c96x-rpm4-349p"],"url":"https://o3.security/vulnerability/CVE-2026-40970","summary":"Spring Boot's Elasticsearch auto-configuration doesn't perform hostname verification when connecting to the Elasticsearch server.","details":"When configured to use an SSL bundle, Spring Boot's Elasticsearch auto-configuration does not perform hostname verification when connecting to the Elasticsearch server.\n\nAffected: Spring Boot 4.0.0–4.0.5; upgrade to 4.0.6 or later per vendor advisory.","published":"2026-04-27T19:09:58.835Z","modified":"2026-08-12T03:51:47.043073169Z","cvss":{"score":5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"},"epss":{"score":0.00136,"percentile":0.03448,"asOf":"2026-08-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.springframework.boot:spring-boot-elasticsearch","fixedVersion":"4.0.6"}],"fix":null,"references":[{"type":"WEB","url":"https://spring.io/security/cve-2026-40970"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40970.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40970"},{"type":"PACKAGE","url":"https://github.com/spring-projects/spring-boot"},{"type":"WEB","url":"https://github.com/spring-projects/spring-boot/releases/tag/v4.0.6"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:47.043073169Z"}}